sign in sign up
<<
Home , Disporum, Streptopus

Flora of 24: 153–154. 2000.

24. Michaux, Fl. Bor.-Amer. 1: 200. 1803. 扭柄花属 niu bing hua shu Chen Xinqi (陈心启 Chen Sing-chi); Minoru N. Tamura Herbs perennial, with a creeping rhizome. Stem erect, simple or distally branched. Leaves alternate, sessile, ovate to lanceolate, thin, many veined, base sometimes amplexicaul. Flowers usually 1 or 2 on an axillary, slender peduncle partly adnate to stem, rarely 2–4 flowers in a terminal inflorescence. Flowers campanulate or subrotate. Tepals 6, free, outer ones usually slightly wider than inner. Stamens 6, inserted at or near base of tepals; filaments usually flat at base; anthers basifixed. Ovary 3-loculed; ovules (2 or 3 or)6–8 per locule. Style columnar or very short. Fruit a berry, globose, several to many seeded. About ten : temperate regions of the N hemisphere; five species (two endemic) in China. 1a. Flowers (2 or)3 or 4 in a terminal inflorescence; tepals cuspidate-caudate at apex ...... 1. S. ovalis 1b. Flowers 1 or 2, on an axillary, slender peduncle partly adnate to stem; tepals acuminate at apex. 2a. Leaves ciliate-denticulate at margin. 3a. Style very short or indistinct; stigma subentire; peduncle curved but not geniculate ...... 2. S. koreanus 3b. Style distinct, columnar, 3–4 mm; stigma deeply 3-lobed; peduncle geniculate near middle ...... 3. S. obtusatus 2b. Leaves entire at margin. 4a. Tepals 8–10 × 3–4 mm; anthers longer than filaments ...... 4. S. simplex 4b. Tepals 6.5–8 × 1–2 mm; anthers shorter than filaments ...... 5. S. parviflorus 1. Streptopus ovalis (Ohwi) F. T. Wang & Y. C. Tang in F. T. smooth. Style indistinct; stigma subentire. Berry 6–9 mm in Wang & Tang, Fl. Reipubl. Popularis Sin. 15: 49. 1978. diam. Seeds many, oblong, slightly curved. Fl. May, fr. Jul–Aug. 卵叶扭柄花 luan ye niu bing hua Forests; 800–2000 m. , , []. 3. Streptopus obtusatus Fassett, Rhodora 37: 102. 1935. ovale Ohwi, Bot. Mag. (Tokyo) 45: 385. 1931; ovalis (Ohwi) M. N. Tamura. 扭柄花 niu bing hua Rhizome elongate, slender, ca. 2 mm thick. Stem some- Streptopus geniculatus F. T. Wang & Tang. times branched distally, ± flexuous, 20–45 cm, pubescent. Rhizome elongate, slender, 1–2 mm thick, with numerous Leaves oblong, ovate-lanceolate, or ovate-elliptic, 4–11 × 2–4 hairy roots. Stem simple or branched distally, 15–35 cm, gla- cm, thinly papery, base cordate, margin ciliate-denticulate, apex brous. Leaves ovate-lanceolate or oblong-lanceolate, 5–8 × 2.5– long acuminate. Flowers (2 or)3 or 4 in a terminal, umbel-like 4 cm, base cordate, margin ciliate-denticulate, apex mucronate. inflorescence, suberect; pedicel 1.5–3 cm, pubescent. Tepals Peduncle axillary, 2–2.5 cm, jointed and geniculate near middle, white, spotted with purple, ovate-lanceolate, 8–9 × 2–3 mm, with a swollen gland at joint, 1-flowered. Flowers nodding. apex cuspidate-caudate. Filaments ca. 3 mm; anthers elliptic. Tepals yellowish, sometimes spotted with purple adaxially, ob- Ovary globose, winged along angles. Style 3.5–4 mm, much long-lanceolate to lanceolate, 8–9 × 1–2 mm. Stamens 3.5–4.5 longer than ovary; stigma distinctly 3-lobed. Berry 2- or 3- mm; filaments short, broad; anthers 3–4 mm. Ovary smooth. seeded. Seeds suborbicular, furrowed. Fl. May, fr. Aug. Style 3–4 mm; stigma deeply 3-lobed. Berry 6–8 mm in diam. Forests. SW Liaoning [Korea]. Seeds elliptic. Fl. Jul, fr. Aug–Sep. Tamura (in Kubitzki, Fam. Gen. Vasc. Pl. 3: 171. 1998) included • Coniferous forests; 2000–3600 m. , W , , this species in the American Prosartes D. Don. Further studies , . are needed in order to ascertain whether this species should be included 4. Streptopus simplex D. Don, Prodr. Fl. . 48. 1825. in Prosartes or Streptopus. 腋花扭柄花 2. Streptopus koreanus (Komarov) Ohwi, Bot. Mag. (Tokyo) ye hua niu bing hua 45: 189. 1931. Rhizome 1.5–2 mm thick. Stem simple or branched dis- 丝梗扭柄花 si geng niu bing hua tally, 20–50 cm, glabrous. Leaves grayish glaucous abaxially, lanceolate to ovate-lanceolate, 2.5–8 × 1.5–3 cm, base rounded Streptopus ajanensis Tiling var. koreanus Komarov, Trudy or cordate, margin entire, apex acuminate. Peduncle axillary, Imp. S.-Peterburgsk. Bot. Sada 20: 476. 1901. 2.5–4.5 cm, neither jointed nor geniculate, glabrous, 1-flowered. Rhizome elongate, slender, ca. 1 mm thick. Stem simple or Flowers nodding. Tepals pink or white, spotted with purple, ovate-oblong, 8–10 × 3–4 mm. Stamens 3–3.5 mm; filaments branched distally, 15–40 cm, sparsely hispidulous. Leaves ovate- lanceolate to ovate-elliptic, 3–10 × 1–3 cm, thinly papery, base flat, basally widened, 1–1.5 mm; anthers ca. 2 mm. Style rounded, margin ciliate-denticulate, apex mucronate. Flowers slender, 5–6 mm; stigma 3-lobed, lobes revolute, ca. 1 mm. 1 or 2 on an axillary peduncle; peduncle wirelike, ca. 1.5 cm, Berry 5–6 mm in diam. Fl. Jun, fr. Aug–Sep. 2n = 16, 32*. not geniculate, elongate in fruit. Tepals yellowish green, nar- Forests, bamboo thickets, hillsides along streams, alpine grass- rowly ovate, 2–3 × ca. 1 mm, minutely tuberculate adaxially, lands; 1700–4000 m. S Xizang, Yunnan [, , Nepal, base connate, apex acuminate. Filaments very short, flat; an- Sikkim]. thers obcordate, minutely tuberculate basally. Ovary globose, 24: 153–154. 2000.

5. Streptopus parviflorus Franchet, Nouv. Arch. Mus. Hist. Nat., sér. 2, 10: 89. 1887. 小花扭柄花 xiao hua niu bing hua Streptopus mairei H. Léveillé. Rhizome short, thickened. Stem usually branched distally, 20–50 cm, glabrous. Leaves lanceolate to ovate-lanceolate, 4–8 × 1.5–4 cm, thinly papery, base cordate, margin entire, apex acuminate. Peduncle 2.5–4 cm, glabrous, neither jointed nor geniculate, 1- or 2-flowered. Flowers nodding. Tepals white, lanceolate, 6.5–8 × 1–2 mm. Stamens 3–3.5 mm; filaments 1.8– 2.2 mm; anthers ca. 1 mm. Style ca. 2.5 mm, slightly longer than ovary; stigma 3-lobed. Berry 5–8 mm in diam., many seeded. Seeds oblong, curved. Fl. Jun, fr. Aug–Sep. • Forests, thickets, alpine grasslands; 2000–3500 m. SW Sichuan, NW Yunnan.

Flora of China 24: 153–154. 2000.